Alert archive / Florida / Red Flag Warnings in 2007

Red Flag Warning 50, NWS Melbourne, FL

May 23, 2007Lake County, Orange County, Osceola County, Florida

NWS Melbourne, FL issued this red flag warning at May 23, 2007, 3:03 AM EDT for Lake County, Orange County, Osceola County, Florida. It took effect at May 23, 2007, 2:00 PM EDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 23, 2007, 3:03 AM EDT (07:03 UTC)
In effect from
May 23, 2007, 2:00 PM EDT
Expired
May 23, 2007, 6:00 PM EDT
In force
4 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 81 km from the middle of the area, began a volume at 07:08 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 7.1 hours before the alert went out and 87 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Cape Canaveral, FL at 00:00Z on 2007-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 00:00Z on 2007-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1246 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS82 KMLB 230703
RFWMLB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
303 AM EDT WED MAY 23 2007

...DRY AND BREEZY CONDITIONS TO INCREASE FIRE THREAT WEST OF
ORLANDO...

FLZ044-045-053-144-232200-
/O.NEW.KMLB.FW.W.0050.070523T1800Z-070523T2200Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
303 AM EDT WED MAY 23 2007

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 6 PM EDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 2 PM TO 6 PM EDT THIS
AFTERNOON. 

RELATIVE HUMIDITY VALUES ARE EXPECTED TO REACH 35 PERCENT FOR AN
HOUR OR TWO THIS AFTERNOON WEST OF ORLANDO. EASTERLY WINDS BETWEEN 15 AND
20 MPH COMBINED WITH THE ONGOING DRY CONDITIONS WILL RESULT IN AN
ELEVATED FIRE THREAT TODAY. THE BREEZY CONDITIONS WILL PROMOTE
THE RAPID SPREAD OF ANY NEW OR EXISTING WILDFIRES.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS...
LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW
RELATIVE HUMIDITY AND STRONG WINDS...ARE EITHER OCCURRING NOW...
OR ARE FORECAST TO OCCUR IN THE NEXT 24 HOURS.

$$

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 2:19 AM EDTLake Wind AdvisoryMLBOkeechobee, Orange, Osceola, Seminole, Volusia18 hr

Nearby

Red Flag Warnings in Florida, 2007Every red flag warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.